Oligolectic: Brassicaceae. In Slovenia it will visit Thlaspi praecox (Brassicaceae).
Tomozei & Radchenko (2015), citing others, state that it is considered to be oligolectic, and forages primarily on Brassicaceae (Capsella bursa-pastoris, Alyssum montanum, Cardamine pratensis, Barbarea vulgaris), but also on Salicaceae (Salix caprea); Asteraceae (Tussilago farfara, Taraxacum offcinalis); Liliaceae (Gagea) and Rosaceae (Potentilla verna) (Kocourek, 1966; Dylewska, 1987; Schmid-Egger and Scheuchl, 1997).